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From: Rob Herring <robh+dt@kernel.org>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Russell King <linux@armlinux.org.uk>, Ray Jui <rjui@broadcom.com>,
	Scott Branden <sbranden@broadcom.com>,
	"maintainer:BROADCOM BCM281XX/BCM11XXX/BCM216XX ARM ARCHITE..." 
	<bcm-kernel-feedback-list@broadcom.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Rich Felker <dalias@libc.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Marc Zyngier <maz@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>,
	Ard Biesheuvel <ardb@kernel.org>, Mike Rapoport <rppt@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Arnd Bergmann <arnd@arndb.de>, Guenter Roeck <linux@roeck-us.net>,
	Kefeng Wang <wangkefeng.wang@huawei.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Andrey Konovalov <andreyknvl@gmail.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Valentin Schneider <valentin.schneider@arm.com>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	"moderated list:ARM PORT" <linux-arm-kernel@lists.infradead.org>,
	"open list:SUPERH" <linux-sh@vger.kernel.org>,
	"open list:BROADCOM BMIPS MIPS ARCHITECTURE" 
	<linux-mips@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE" 
	<devicetree@vger.kernel.org>
Subject: Re: [PATCH 01/11] arch: Export cpu_logical_map to modules
Date: Mon, 27 Sep 2021 14:32:08 -0500	[thread overview]
Message-ID: <CAL_JsqLp0o9CpG=ej3HsnDO-bG02CF4a55sYTOvxMR3rMyboqg@mail.gmail.com> (raw)
In-Reply-To: <20210924170546.805663-2-f.fainelli@gmail.com>

On Fri, Sep 24, 2021 at 12:06 PM Florian Fainelli <f.fainelli@gmail.com> wrote:
>
> In order to allow drivers/irqchip/irq-bcm7038-l1.c to be built as a
> module and usable in GKI, export cpu_logical_map or __cpu_logical_map
> towards the modules.

This is the usage:

#ifdef CONFIG_SMP
        cpu = intc->cpus[cpu_logical_map(smp_processor_id())];
#else
        cpu = intc->cpus[0];
#endif

This is totally broken! cpu_logical_map() takes the logical cpu
number, 0-N, and returns the MPIDR which you then use as an array
index.

Rob

WARNING: multiple messages have this Message-ID (diff)
From: Rob Herring <robh+dt@kernel.org>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	 Ray Jui <rjui@broadcom.com>,
	Scott Branden <sbranden@broadcom.com>,
	 "maintainer:BROADCOM BCM281XX/BCM11XXX/BCM216XX ARM ARCHITE..."
	<bcm-kernel-feedback-list@broadcom.com>,
	 Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	 Yoshinori Sato <ysato@users.sourceforge.jp>,
	Rich Felker <dalias@libc.org>,
	 Thomas Gleixner <tglx@linutronix.de>,
	Marc Zyngier <maz@kernel.org>,
	 Frank Rowand <frowand.list@gmail.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	 Mike Rapoport <rppt@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	 Andrew Morton <akpm@linux-foundation.org>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	 Arnd Bergmann <arnd@arndb.de>,
	Guenter Roeck <linux@roeck-us.net>,
	 Kefeng Wang <wangkefeng.wang@huawei.com>,
	Mark Rutland <mark.rutland@arm.com>,
	 Andrey Konovalov <andreyknvl@gmail.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	 Valentin Schneider <valentin.schneider@arm.com>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	 "moderated list:ARM PORT" <linux-arm-kernel@lists.infradead.org>,
	 "open list:SUPERH" <linux-sh@vger.kernel.org>,
	 "open list:BROADCOM BMIPS MIPS ARCHITECTURE"
	<linux-mips@vger.kernel.org>,
	 "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE"
	<devicetree@vger.kernel.org>
Subject: Re: [PATCH 01/11] arch: Export cpu_logical_map to modules
Date: Mon, 27 Sep 2021 14:32:08 -0500	[thread overview]
Message-ID: <CAL_JsqLp0o9CpG=ej3HsnDO-bG02CF4a55sYTOvxMR3rMyboqg@mail.gmail.com> (raw)
In-Reply-To: <20210924170546.805663-2-f.fainelli@gmail.com>

On Fri, Sep 24, 2021 at 12:06 PM Florian Fainelli <f.fainelli@gmail.com> wrote:
>
> In order to allow drivers/irqchip/irq-bcm7038-l1.c to be built as a
> module and usable in GKI, export cpu_logical_map or __cpu_logical_map
> towards the modules.

This is the usage:

#ifdef CONFIG_SMP
        cpu = intc->cpus[cpu_logical_map(smp_processor_id())];
#else
        cpu = intc->cpus[0];
#endif

This is totally broken! cpu_logical_map() takes the logical cpu
number, 0-N, and returns the MPIDR which you then use as an array
index.

Rob

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-09-27 19:32 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-24 17:05 [PATCH 00/11] Modular Broadcom irqchip drivers Florian Fainelli
2021-09-24 17:05 ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 01/11] arch: Export cpu_logical_map to modules Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-27 19:32   ` Rob Herring [this message]
2021-09-27 19:32     ` Rob Herring
2021-09-27 19:43     ` Florian Fainelli
2021-09-27 19:43       ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 02/11] genirq: Export irq_to_desc() again " Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-25 21:00   ` Thomas Gleixner
2021-09-25 21:00     ` Thomas Gleixner
2021-09-26  2:29     ` Florian Fainelli
2021-09-26  2:29       ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 03/11] genirq: Export irq_set_affinity_locked() Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-25 11:48   ` Marc Zyngier
2021-09-25 11:48     ` Marc Zyngier
2021-09-25 21:21     ` Thomas Gleixner
2021-09-25 21:21       ` Thomas Gleixner
2021-09-25 21:37       ` Thomas Gleixner
2021-09-25 21:37         ` Thomas Gleixner
2021-09-27 17:47         ` Florian Fainelli
2021-09-27 17:47           ` Florian Fainelli
2021-09-27 18:18           ` Thomas Gleixner
2021-09-27 18:18             ` Thomas Gleixner
2021-09-27 18:25             ` Florian Fainelli
2021-09-27 18:25               ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 04/11] irqchip/irq-bcm7038-l1: Switch to IRQCHIP_PLATFORM_DRIVER Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 05/11] irqchip/irq-brcmstb-l2: " Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 06/11] genirq: Export irq_gc_{unmask_enable,mask_disable}_reg Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-26  2:30   ` Florian Fainelli
2021-09-26  2:30     ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 07/11] of/irq: Export of_irq_count to drivers Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-27 19:08   ` Rob Herring
2021-09-27 19:08     ` Rob Herring
2021-09-27 19:28     ` Florian Fainelli
2021-09-27 19:28       ` Florian Fainelli
2021-09-27 19:43       ` Rob Herring
2021-09-27 19:43         ` Rob Herring
2021-09-27 19:49         ` Florian Fainelli
2021-09-27 19:49           ` Florian Fainelli
2021-09-27 20:09           ` Rob Herring
2021-09-27 20:09             ` Rob Herring
2021-09-28  8:10           ` Marc Zyngier
2021-09-28  8:10             ` Marc Zyngier
2021-09-24 17:05 ` [PATCH 08/11] genirq: Export irq_gc_noop() Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 09/11] irqchip/irq-bcm7120-l2: Switch to IRQCHIP_PLATFORM_DRIVER Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-24 17:05 ` [PATCH 10/11] arm64: broadcom: Removed forced select of interrupt controllers Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli
2021-09-25 12:09   ` Marc Zyngier
2021-09-25 12:09     ` Marc Zyngier
2021-09-25 17:46     ` Arnd Bergmann
2021-09-25 17:46       ` Arnd Bergmann
2021-09-24 17:05 ` [PATCH 11/11] ARM: bcm: " Florian Fainelli
2021-09-24 17:05   ` Florian Fainelli

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